Cablofil Catalog - 2022/2023 - B.5

PW LADDER TRAY
LENGTH: The overall length of each cable
tray straight section. The spacing of
the cable tray supports will determine
the length requirements for straight
trays. The support span should not be
greater than the straight section length
to ensure that no more than one splice
plate connection is located between
supports.
LENGTH: The
tray straight
tra
le
a
ength r
t
ays. The s
greater than
to ensure th
plate conne
supports.
BOTTOM TYPE: Legrand offers numerous
tray bottom types and options to
accommodate a wide variety of wire
management solutions.
SIDE RAIL HEIGHT:
The overall height of the cable
tray side rail. In general, side rail
heights for PW cable trays are 1 "
greater than the load depth.
We = 2 x (concentrated static load, lbs.)
support span length, ft.
Example: A 200 lb. concentrated load is to be applied to
a cable tray that is supported on a 12 ft. support span.
Using the formula above, the equivalent uniform load
We = 2 x 200 / 12 = 33 lbs. per linear foot. This should be
added to the anticipated cable load to determine the
appropriate Load/Span Class for the cable tray.
Note: To accommodate concentrated loads, some circumstances
may require cable trays to have reinforced side rails or bottom
members. Therefore, it is recommended that you consult with
Legrand when considering concentrated loads or any other
special cable tray loading requirements.
WORKING
LOAD
lbs/ft (kg/m)
LOAD/SPAN CLASS DESIGNATIONS
SUPPORT SPAN, ft. (m)
8 ft.
(2.4 m)
25 (37) -
45 (67) -
50 (74)
65 (97) -
75 (112)
100 (149)
120 (179) -
200 (299) -
10 ft.
(3.0 m)
A
-
8A
8B
8C
-
C
-
-
D
E
12 ft.
(3.7 m)
-
-
12A
-
12B
12C
-
-
20 ft.
(6.0 m)
-
D
20A
-
E or 20B
20C
-
-
WORKING LOAD: Total load of cables installed and uniformly
distributed in the cable tray.
SUPPORT SPAN: Maximum distance between cable tray supports.
CLASSES 8, 12, 20 / A, B, C: NEMA designations, published by the
National Electrical Manufacturers Assoc. in Standard VE1.
CLASSES A, C, D, AND E: CSA designations, published by the
Canadian Standards Association in Standard C22.2, No. 126.
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B.5
INTRODUCTION

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Cablofil Catalog - 2021/2022

Table of Contents for the Digital Edition of Cablofil Catalog - 2021/2022

Table of Contents
Cablofil Catalog - 2021/2022 - Cover1
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Cablofil Catalog - 2021/2022 - Table of Contents
Cablofil Catalog - 2021/2022 - A
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Cablofil Catalog - 2021/2022 - C
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Cablofil Catalog - 2021/2022 - D
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Cablofil Catalog - 2021/2022 - XII
Cablofil Catalog - 2021/2022 - XIIa
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Cablofil Catalog - 2021/2022 - XIIc
Cablofil Catalog - 2021/2022 - XIId
Cablofil Catalog - 2021/2022 - XIII
Cablofil Catalog - 2021/2022 - Cover4
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